Improvement in joint-bolt



UNITED STATES PATENT OEEIGE S. E. JEWETT, OF HAVERHILL, MASSACHUSETTS.

IMPROVEMENT IN JOINT-BOLT.

Specification forming part of Letters Patent No. 70,223, dated` October29, 1867.

To all whom it may concern:

Be it known that I, S. E. J EWETT, of Haverhill, county of Essex, andState of Massachusetts, have invented a new and useful Improvement inJoint-Bolts, whereby the same are more eiectually secured than by anyother device hitherto used for that purpose, obviatin g the necessity ofletting a nut into the Wood, as is generally done; and I do declare thatthe following' is a full, clear, and exact description of the same,reference being had to theV annexed drawings, forming a part of thisspecilication- Figure l being a sectional representation of my bolt,wherein A is the head, and B the body, of the bolt, with a portion ofthe metal cut away at C, and its place supplied bya seg ment of wood,said segment being dovetailed into the metal, as shown. By theapplication of glue to the wood segment, as the bolt is forced home, thesame is thereby firmly and securely retained in its place, no ordinaryamount of force` being sufficient to Withdraw it, ifproperly done.

Fig. 2 represents a sectional view of a common window-blind, or rather aportion of the frame of a blind, with the joint J secured with my bolt,also the joint O secured with the hinge-headed bolt H.

Fig. 3 represents a horizontal section of the same portion of the blindas shown in vertical section in Fig. 2.

Claim.

What I claim as my invention, and desire to secure by Letters Patent, is

l. A joint-bolt furnished with a dovetailed slot, and a dovetailedsegment of wood to t the same.

' 2. I claim the application of a segment of Wood and glue, incombination with the ordinary bolt-head, or its equivalent, or with ahinge-head, as specified and described.

S. E. JEWETT.

Witnesses:

N. SPOFFORD, JOHN EDWARDS.

